Facebook is slowly rolling out file sharing for groups, Mashable and TechCrunch reported. The company described a slow-motion rollout where a "small percentage" of groups would be able to send files starting today and more will have access in coming days.

Users can upload most file types up to 25MB -- the same file size limit as Gmail. The exceptions: music files (sorry, old-school Napster fans) and executable (.exe) files (sorry, hackers). But e-books, comics, music videos and other small movies are fair game.

To prevent the spread of malicious, inappropriate or copyrighted files, "users can report files the same way they can with other content across the site," a Facebook spokesperson said. Whether a group that wants to share such things will willingly turn itself in remains to be seen.